 .taboutter{
 	margin: 100px auto;
 	width: 800px;
    padding: 0;
 	border: 1px solid #ccc; 
 }

ul {
	margin: 0px;
	padding: 0px;
	list-style: none;
	width: 100%;
	height: 45px;
	line-height: 45px;
}
 
ul li{
	display: inline-block;
	width: 30%;
	text-align: center;
	margin: 0;
	padding: 0;
	float: left;
	background-color: #ccc;
}
 ul li:hover{
 	background-color: #fff;
 }
 .tab{

 	border-top: 1px solid #ccc;
 }